Find the Southern Cross constellation and the two Pointers in the night sky. Draw
an imaginary line extending 4 1/2 times the long axis of the Southern Cross. Then draw
another imaginary line which is the perpendicular bisector of the line joining the
Pointers. The two imaginary lines will cross at the South Celestial Pole. This is a point
directly above the Geographic South Pole. It is also a point around which all stars in the
southern hemisphere revolve.

Draw Star Diameters to Scale

Materials you need are:

a ruler

a pen

a sheet of cardboard

Use the table below to draw circles to represent the star diameters.

To change the real diameter in km to the scaled diameter in cm, you must divide by 1,000,000.